Conwork Rotating Compact Travel 4 Ports SuperSpeed USB 3.0 Hub Pocket Size Adapter Compact For Laptop PC Tablet 4 x Super-speed USB 3.0 ports, each provides 10 x faster speed than USB 2.0, Compatible with USB 2.0/1.1 Compact USB 3.0 adapter with 4 ports,Backward compatible with USB: 2.0/1.1 No Additional Power Adapter Needed Plug and play, no driver required, works with Windows XP/Vista/7/8/8.1. Mac OS X or above. Linux 3.0 or above. Package Contents: 1 x USB 3.0 4 Port Hub